“专升本”英语统一考试试卷（120分钟）PartⅠListeningcomprehension（20points）(略)PartⅡReadingComprehension（30points）Directions:Inthissectiontherearefourpassages.Eachofthemisfollowedbysomequestions.ForeachquestiontherearefoursuggestedanswersmarkedA),B),C),andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter.Questions21-25arebasedonthefollowingpassage.ByfarthemostcommonsnakeinBritainistheadder(奎蛇).InScotland,infact,therearenoothersnakesatall.TheadderisalsotheonlyBritishsnakewithapoisonousbite.Itcanbefoundalmostanywhere,butpreferssunnyhillsidesandroughopencountry,includinghighground.InIrelandtherearenosnakesatall.Mostpeopleregardsnakebitesasafatal(致命旳)misfortune,butnotallbitesareserious,andveryfewarefatal.Sometimesattemptsatemergencytreatmentturnouttobemoredangerousthanthebiteitself,withamateurs(外行人)heroically,butmistakenly,tryingdo-it-yourselfsurgery(手术)andotherunnecessarymeasures.Allsnakeshavesmallteeth,sothatallsnakescanbite,butonlythebiteoftheadderpresentsanydanger.Britishsnakesareshyanimalsandfarmorefrightenedofyouthanyoucouldpossiblybeofthem.Theadderwillattackonlyifitfeelsthreatened,ascanhappenifyoutakeitbysurpriseandsteponitaccidentally,orifyoutrytocatchitorpickitup,whichitdislikesintensely.Ifithearsyoucoming,itwillnormallygetoutofthewa6yasquicklyasitcan,butadderscannotmoveveryrapidlyandmayattackbeforemovingifyouareveryclose.Theeffectofabitevariesconsiderably.Itdependsuponseveralthings,oneofwhichisthebody-weightofthepersonbitten.Thebiggertheperson,thelessharmfulthebiteislikelytobe,whichiswhychildrensufferfarmoreseriouslyfromsnakebitesthanadults.Ahealthypersonwillalsohavebetterresistanceagainstthepoison.VeryfewpeopleactuallydiefromsnakebitesinBritain,andthoughthesebitescanmakesomepeopleveryill,thereareprobablyjustasmanycasesofbiteshavinglittleornoeffect,asthereareofseriousillness.21.Addersaremostlikelytobefound_______.A)inwiderpartsofBritainandIrelandB)inScotlandbutnowhereelseC)onwildlandthroughBritainD)inthe